Phenol → Diphenyl carbonate

Participants

Reaction Steps

In a planar-section pot with flow spoilers, blower/stirrer and reflux condenser, 0.75 mol/h of phosgene was bubbled through 141 g (1.50 mol) of phenol in the presence of 14.1 g (10 wt. % w.r.t. phenol) of powdered H-SAPO 5. After about 2 hours reaction at 140° C., the phenol conversion was 7.1%, wherein 4.9 g of phenyl chloroformate and 8.0 g of diphenyl carbonate were formed. The selectivity to give the carbonate and phenyl chloroformate was greater than 99%.

Provenance & Evidence